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In this article, the editor introduces in detail "mysql how to query the first column of data", the content is detailed, the steps are clear, and the details are handled properly. I hope this "mysql how to query the first column of data" article can help you solve your doubts.

In mysql, you can use the select statement to query the first column of data, which can query the data and output the results according to the field name of the specified column, just set the field name after the "SELECT" keyword to the first column field name you want to find; syntax "SELECT first column field name FROM table name;".

The operating environment of this tutorial: windows7 system, mysql8 version, Dell G3 computer.

In mysql, you can use the select statement to query the first column of data.

The select statement allows you to query the data and output the results based on the field names of the specified columns.

The field after the SELECT keyword is called the field you want to find. If you forget the field name, you can use the DESC command to view the structure of the table.

The syntax format for the first column field in the query table is:

SELECT first column field name FROM table name

Example:

Query the names of all students in the name column in the tb_students_info table

SELECT name FROM tb_students_info

The output shows all the data under the name field in the tb_students_info table:

Description:

You can use the SELECT declaration to obtain the data under multiple fields. You only need to specify the field name to be looked up after the keyword SELECT. Different field names are separated by commas "and". There is no need to add a comma after the last field. The syntax format is as follows:

SELECT,... , FROM

Example: get the id, name and height columns from the tb_students_info table

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